Detect Signature Zones
Locate every signature field in a PDF — name, page, position, signed/unsigned status — for routing to e-sign workflows.
1. Upload your file
How does the Detect Signature Zones work?
Walk a PDF and pull out every AcroForm /Sig (signature) field — its name, the page it sits on, its rectangle on that page, and whether it has been signed. Useful when routing a PDF through an e-sign workflow that needs to know where to place signature widgets, when auditing a partially-signed contract for outstanding signatures, or when preparing for a Sign PDF tool to add a signature in the right zone.
🔒 Security & Privacy
All processing happens on your device. Your files never leave your browser, never touch our servers, and are not stored anywhere. Close the tab and the file is gone.
📱 Use it on any device
Works in any modern browser — Mac, Windows, Linux, iPhone, Android, and tablets. No installation, no app to download. Just open the page and start.
⚡ Quick & easy
Drag, drop, click. Most files process in seconds, not minutes. No watermarks added to your output, no per-day limits, and the tool always shows the result before asking you to download.
🎁 Always free, no signup
Free to use, every time. No account creation, no email required, no “trial” that converts to a paid plan. We make money from ads so you don’t have to pay.